--- product_id: 7397023 title: "EFX Sports Karbolyn Fuel | Fast-Absorbing Carbohydrate Powder | Carb Load, Sustained Energy, Quick Recovery | Stimulant Free | 39 Servings (Neutral)" brand: "efx sports" price: "¥24252" currency: JPY in_stock: true category: "Efx Sports" url: https://www.desertcart.jp/products/7397023-efx-sports-karbolyn-fuel-fast-absorbing-carbohydrate-powder-carb-load store_origin: JP region: Japan --- # Fast-absorbing carbs 100% vegan & stimulant-free 3X quality tested EFX Sports Karbolyn Fuel | Fast-Absorbing Carbohydrate Powder | Carb Load, Sustained Energy, Quick Recovery | Stimulant Free | 39 Servings (Neutral) **Brand:** efx sports **Price:** ¥24252 **Availability:** ✅ In Stock ## Summary > ⚡ Fuel your grind, skip the crash — elite energy for the relentless pro. ## Quick Answers - **What is this?** EFX Sports Karbolyn Fuel | Fast-Absorbing Carbohydrate Powder | Carb Load, Sustained Energy, Quick Recovery | Stimulant Free | 39 Servings (Neutral) by efx sports - **How much does it cost?** ¥24252 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/7397023-efx-sports-karbolyn-fuel-fast-absorbing-carbohydrate-powder-carb-load) ## Best For - efx sports enthusiasts ## Why This Product - Trusted efx sports brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Clean Formula:** Gluten-free, sugar-free, stimulant-free, and vegan-friendly for mindful athletes - • **Versatile Use:** Perfect pre, intra, or post-workout to maximize power output and recovery - • **Pure & Trusted:** In-house manufacturing with triple quality checks ensures 100% label accuracy 🌱 - • **Rapid Energy Surge:** Clinically studied Karbolyn fuels muscles faster than simple sugars ⚡ - • **Crash-Free Endurance:** Sustained energy without bloating or sugar crashes for peak performance 🛡️ ## Overview EFX Sports Karbolyn Fuel is a fast-absorbing, clinically studied carbohydrate powder designed for elite athletes seeking rapid muscle fuel and sustained energy without sugar crashes or bloating. Manufactured in-house with triple quality testing, this stimulant-free, vegan-friendly formula supports pre, intra, and post-workout endurance and recovery across 39 servings. ## Description Buy EFX Sports Karbolyn Fuel | Fast-Absorbing Carbohydrate Powder | Carb Load, Sustained Energy, Quick Recovery | Stimulant Free | 39 Servings (Neutral) on desertcart.com ✓ FREE SHIPPING on qualified orders ## Features - FAST-ACTING FUEL: Karbolyn is a clinically studied (with peer-reviewed, published research) carbohydrate supplement powder sourced from potato, rice, and corn. It’s specifically designed for elite athletes looking for a fast, safe, and effective way to quickly and easily load their muscles with lasting energy and promote faster recovery. - PEAK PERFORMANCE: Karbolyn enters the bloodstream like a simple sugar, yet it still provides sustained energy without the crash. It's absorbed faster than dextrose, simple sugar, bread, rice, and other carbohydrate products. Enjoy pre, intra, or post training to maximize and maintain high-intensity training, power output, and increase muscle fullness & pumps. - ALL CARBS AREN'T CREATED EQUAL: Unlike simple carbs that tend to cause a spike and crash or complex carbs that are slow to digest, leaving you feeling bloated and lethargic, Karbolyn combines the best of both by providing you with fast absorption and sustained energy without the bloating or crash. Plus, Karbolyn is 100% sugar-free, gluten-free, stimulant-free, and vegan-friendly. - MANUFACTURED IN-HOUSE: EFX Sports is part of a very small, elite group of brands who actually make their own products. That’s why we guarantee Karbolyn always meets label claims and is 100% banned-substance free (certified by Informed Sport). With Karbolyn, you'll know you have a pure and potent carbohydrate product. - 3X QUALITY TESTING: At EFX Sports, we proudly own every phase of the manufacturing process to ensure what's on the label is what's in the bottle...without question. In fact, every EFX Sports product must pass 3 critical quality checkpoints—before, during and after production. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B009K6WAAS | | ASIN | B009K6WAAS | | Age Range Description | Adult | | Best Sellers Rank | #9,012 in Health & Household ( See Top 100 in Health & Household ) #5 in Sports Nutrition Post Workout & Recovery Products | | Brand Name | EFX Sports | | Color | No Color | | Customer Reviews | 4.6 4.6 out of 5 stars (1,079) | | Date First Available | November 4, 2011 | | Dosage Form | Powder | | Flavor | Neutral | | Item Dimensions | 6 x 6 x 10 inches | | Item Form | Powder | | Item Weight | 4.6 pounds | | Item model number | 5260024 | | Manufacturer | EFX Sports | | Manufacturer | EFX Sports | | Manufacturer Part Number | 5260024 | | Material Features | Gluten Free, Sugar Free, Vegan | | Model Name | Sports Karbolyn Fuel | | Model Number | 5260024 | | Number of Items | 1 | | Primary Supplement Type | Karbolyn | | Product Benefits | Endurance | | Product Dimensions | 6 x 6 x 10 inches; 4.6 pounds | | Total Servings Per Container | 39 | | UPC | 737190002032 | | Unit Count | 68.8 Ounce | ## Product Details - **Age Range (Description):** Adult - **Brand:** EFX Sports - **Flavor:** Neutral - **Item Form:** Powder - **Item Weight:** 4.6 pounds - **Item dimensions L x W x H:** 6 x 6 x 10 inches - **Number of Items:** 1 - **Primary Supplement Type:** Karbolyn - **Product Benefits:** Endurance - **Unit Count:** 68.8 Ounce ## Images ![EFX Sports Karbolyn Fuel | Fast-Absorbing Carbohydrate Powder | Carb Load, Sustained Energy, Quick Recovery | Stimulant Free | 39 Servings (Neutral) - Image 1](https://m.media-amazon.com/images/I/713yqRtgmIL.jpg) ## Available Options This product comes in different **Size, Flavor** options. ## Questions & Answers **Q: Has anyone tried this before a long run? How did it work?** A: Yes, I have tried this before a spartan beast approx 12 miles in the middle of July taking about 4 hrs to complete. It worked well. I would suggest depending on the miles you are running, a gel pack during your run I utilize this product before, during, and post workouts I would strongly recommend this product for anyone who needs a quick absorbing carb. **Q: Is this product vegan?** A: Yes! I called the company and they said it has properties of potato, rice, and corn. No animal derivatives. **Q: Is you product 3rd party tested for purity?** A: Yes, All EFX Sports products are tested under the 3rd party Informed Sport. You can view all tests on their web site by the lot number on your product. On top of that we manufacture 100% of our own products and have a full service inhouse analytical lab. Please see our website for the video titled 'Dock to Dock" for a more in depth view of what we do. **Q: How many years till it expires** A: No way to tell for sure but most of their dates are not until 2021 ## Frequently Bought Together - EFX Sports Karbolyn Fuel | Fast-Absorbing Carbohydrate Powder | Carb Load, Sustained Energy, Quick Recovery | Stimulant Free | 39 Servings (Neutral) - Nutricost Creatine Monohydrate Micronized Powder 500G, 5000mg Per Serv (5g) - 100 Servings, 17.9 Oz - Nutricost EAA Powder 30 Servings (Blue Raspberry) - Essential Amino Acids - Non-GMO, Gluten Free, Vegetarian Friendly --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/7397023-efx-sports-karbolyn-fuel-fast-absorbing-carbohydrate-powder-carb-load](https://www.desertcart.jp/products/7397023-efx-sports-karbolyn-fuel-fast-absorbing-carbohydrate-powder-carb-load) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-11-10*